Ok, so wasn't too bad. Only took 2.5 hours. First hour was the learning curve on what worked best (as well as getting the seized wheels off the hubs) and was cake from then forward. A TIP: On the rear, use a bottle jack and put in on the bump stop plate with a 2x4 piece on top and jack it up to jack down the axle. Made the rear swap easy. Front's went in w/o any problems. In total, gained about 1.75 in the front and 1.60 in the rear swapping a 14/57 to a 18/60 spring rate on a JK. Forgive the image on the post lift. Raining now and no sun earlier. Played with the exposure so you can see the tires. For a $100.00, you can't beat this quick lift.